/* ==========================================================================
   BartaranWeb (برتران وب) - Master Stylesheet
   Designed with strict token architecture from DESIGN.md
   ========================================================================== */

/* --- Font Faces --- */
@font-face {
    font-family: 'YekanBakhFaNum';
    src: url('../fonts/YekanBakhFaNum-Regular.woff2') format('woff2'),
         url('../fonts/YekanBakhFaNum-Regular.woff') format('woff'),
         url('../fonts/YekanBakhFaNum-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'YekanBakhFaNum';
    src: url('../fonts/YekanBakhFaNum-SemiBold.woff2') format('woff2'),
         url('../fonts/YekanBakhFaNum-SemiBold.woff') format('woff'),
         url('../fonts/YekanBakhFaNum-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'YekanBakhFaNum';
    src: url('../fonts/YekanBakhFaNum-Bold.woff') format('woff'),
         url('../fonts/YekanBakhFaNum-Bold.ttf') format('truetype'),
         url('../fonts/YekanBakhFaNum-Bold.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'YekanBakhFaNum';
    src: url('../fonts/YekanBakhFaNum-Black.woff2') format('woff2');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

/* --- Design Tokens from DESIGN.md --- */
:root {
    --color-primary: #126b77;
    --color-primary-light: #2aafc0;
    --color-primary-glow: rgba(42, 175, 192, 0.25);
    --color-secondary: #3e4ba6;
    --color-secondary-light: #6976c5;
    
    --color-surface: #ffffff;
    --color-surface-subtle: #f8fafc;
    --color-surface-dark: #0f172a;
    --color-surface-darker: #090d16;
    --color-card-dark: #162033;
    
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-text-inverse: #ffffff;
    
    --color-border: #e2e8f0;
    --color-border-dark: #1e293b;
    --color-success: #047857;
    --color-error: #b91c1c;

    --font-family: 'YekanBakhFaNum', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
    --shadow-glow: 0 0 25px rgba(42, 175, 192, 0.4);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Base & Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    direction: rtl;
    text-align: right;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button, input, textarea, select {
    font-family: inherit;
    border: none;
    outline: none;
}

/* --- Container & Grid --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-fluid {
    width: 100%;
    padding: 0 24px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -12px;
}

[class*="col-"] {
    padding: 0 12px;
    width: 100%;
}

@media (min-width: 768px) {
    .col-md-4 { width: 33.3333%; }
    .col-md-6 { width: 50%; }
    .col-md-12 { width: 100%; }
}

@media (min-width: 992px) {
    .col-lg-3 { width: 25%; }
    .col-lg-4 { width: 33.3333%; }
    .col-lg-6 { width: 50%; }
    .col-lg-8 { width: 66.6666%; }
    .col-lg-12 { width: 100%; }
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-style: normal; /* Strict rule: never italic */
    color: var(--color-text-primary);
    line-height: 1.3;
    font-weight: 700;
}

h1 { font-size: 2.25rem; font-weight: 800; }
h2 { font-size: 1.85rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 0.95rem; }

.section-head {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(42, 175, 192, 0.1);
    color: var(--color-primary-light);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
    border: 1px solid rgba(42, 175, 192, 0.25);
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto;
}

.section-padding {
    padding: 90px 0;
}

.bg-subtle {
    background-color: var(--color-surface-subtle);
}

.bg-dark {
    background-color: var(--color-surface-dark);
    color: var(--color-text-inverse);
}
.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4, .bg-dark h5, .bg-dark h6 {
    color: var(--color-text-inverse);
}
.bg-dark .section-subtitle {
    color: #94a3b8;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(42, 175, 192, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(42, 175, 192, 0.5);
    color: #ffffff;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary-light), var(--color-secondary));
    color: #ffffff;
}
.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(105, 118, 197, 0.4);
    color: #ffffff;
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
}
.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    color: #ffffff;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

/* --- Navigation Bar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    padding: 12px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand img {
    height: 24px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    font-weight: 600;
    position: relative;
    padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary-light);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-light);
    transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-toggle {
    display: none;
    background: none;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Hero Section with Particles --- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.94) 100%),
                url('../images/hero_background.webp') center/cover no-repeat;
    color: #ffffff;
    padding: 140px 0 90px;
    overflow: hidden;
}

#hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 8px 22px;
    border-radius: var(--radius-full);
    background: rgba(42, 175, 192, 0.15);
    color: var(--color-primary-light);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 24px;
    border: 1px solid rgba(42, 175, 192, 0.35);
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.15rem;
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 38px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Inner Page Header Banner --- */
.page-banner {
    background: linear-gradient(135deg, var(--color-surface-dark) 0%, #162033 100%);
    color: #ffffff;
    padding: 130px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--color-border-dark);
}

.page-banner h1 {
    color: #ffffff;
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #94a3b8;
}

.breadcrumbs a {
    color: var(--color-primary-light);
}

/* --- Cards & Feature Items --- */
.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(42, 175, 192, 0.4);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(42, 175, 192, 0.12), rgba(105, 118, 197, 0.15));
    color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 24px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}

.feature-card h3, .feature-card h4, .feature-card h5 {
    margin-bottom: 14px;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Skills Section --- */
.skills-box {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.skill-bar-item {
    margin-bottom: 24px;
}

.skill-bar-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.skill-track {
    height: 10px;
    background: #e2e8f0;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(to left, var(--color-primary-light), var(--color-secondary-light));
    border-radius: var(--radius-full);
    transition: width 1.2s ease-in-out;
}

/* --- Achievements Counter Section --- */
.counter-box {
    text-align: center;
    padding: 30px 20px;
}

.counter-icon {
    font-size: 2.2rem;
    color: var(--color-primary-light);
    margin-bottom: 14px;
}

.counter-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 8px;
    font-family: var(--font-family);
}

.counter-label {
    color: #cbd5e1;
    font-size: 1rem;
    font-weight: 600;
}

/* --- Pricing Tables --- */
.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
    margin-bottom: 30px;
}

.pricing-card.featured {
    border-color: var(--color-primary-light);
    box-shadow: 0 10px 35px rgba(42, 175, 192, 0.18);
    transform: scale(1.02);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 18px;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(42, 175, 192, 0.35);
}

.pricing-header {
    border-bottom: 1px dashed var(--color-border);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.pricing-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.pricing-amount {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.pricing-features {
    text-align: right;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 0.92rem;
    border-bottom: 1px solid #f1f5f9;
}

.pricing-features li.checked {
    color: var(--color-text-primary);
}

.pricing-features li.checked i {
    color: var(--color-success);
    font-size: 1rem;
}

.pricing-features li.crossed {
    color: #94a3b8;
    text-decoration: line-through;
}

.pricing-features li.crossed i {
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* --- Testimonials --- */
.testimonial-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.testimonial-quote {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
}

.testimonial-client {
    display: flex;
    align-items: center;
    gap: 14px;
}

.client-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
}

.client-name {
    font-weight: 700;
    font-size: 1rem;
}

.client-role {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* --- Contact & Forms --- */
.contact-wrapper {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.contact-info-panel {
    background: linear-gradient(135deg, var(--color-surface-dark) 0%, #162033 100%);
    color: #ffffff;
    padding: 48px 36px;
    height: 100%;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(42, 175, 192, 0.15);
    color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-info-text h4 {
    color: #ffffff;
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-info-text p, .contact-info-text a {
    color: #cbd5e1;
    font-size: 0.95rem;
    direction: ltr;
    display: inline-block;
}

.contact-info-text .address-text {
    direction: rtl;
}

.contact-form-panel {
    padding: 48px 36px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-subtle);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    background: var(--color-surface);
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(42, 175, 192, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.captcha-badge {
    background: #e2e8f0;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
    user-select: none;
    letter-spacing: 2px;
}

/* --- Footer --- */
.footer {
    background-color: var(--color-surface-darker);
    color: #94a3b8;
    padding: 60px 0 24px;
    border-top: 1px solid var(--color-border-dark);
}

.footer-logo {
    margin-bottom: 20px;
    display: inline-block;
}

.footer-logo img {
    height: 24px;
    width: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #cbd5e1;
    font-size: 0.9rem;
    font-weight: 500;
}
.footer-links a:hover {
    color: var(--color-primary-light);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 28px;
}

.social-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}

.social-icon:hover {
    background: var(--color-primary-light);
    color: #ffffff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    font-size: 0.85rem;
}

/* --- Mobile Sticky CTA & App Bottom Navigation --- */
.mobile-sticky-cta {
    position: fixed;
    bottom: 65px;
    left: 16px;
    right: 16px;
    z-index: 998;
    display: none !important;
}

@media (min-width: 992px) {
    .mobile-sticky-cta {
        display: none !important;
    }
}

.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: none;
    z-index: 999;
    align-items: center;
    justify-content: space-around;
    padding: 0 8px;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 0.72rem;
    gap: 3px;
    flex: 1;
}

.mobile-nav-item i {
    font-size: 1.15rem;
}

.mobile-nav-item.active, .mobile-nav-item:hover {
    color: var(--color-primary-light);
}

/* --- Cookie Banner --- */
.cookie-banner {
    position: fixed;
    bottom: 75px;
    left: 20px;
    right: 20px;
    max-width: 500px;
    margin: 0 auto;
    background: rgba(15, 23, 42, 0.95);
    color: #ffffff;
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.cookie-text {
    font-size: 0.85rem;
    line-height: 1.6;
}

/* --- Responsive Media Queries --- */
@media (max-width: 991px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-surface-dark);
        flex-direction: column;
        padding: 30px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
        z-index: 999;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .mobile-toggle {
        display: block;
    }

    .nav-actions .btn {
        display: none;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .mobile-sticky-cta.show-mobile {
        display: block !important;
    }

    .mobile-bottom-nav {
        display: flex;
    }

    body {
        padding-bottom: 60px; /* Space for bottom nav */
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.85rem;
    }

    .hero-desc {
        font-size: 1rem;
    }

    .section-padding {
        padding: 60px 0;
    }

    .contact-form-panel, .contact-info-panel {
        padding: 30px 20px;
    }
}